Heavy-duty belt adjuster



N.- J. M'cCAY.

HEAVY DUTY BELT ADJUSTER. APPLICATIVON nusu FEB. 17.1921.

Patented May 2, 1922.

2 SHEETSSHEET 1- mm? I Ngwiun .l-Mc E515 amp N. J. McC-AY,

HEAVY DUTY BELT ADJUSTER..

APPLICATION FILED may. 1921.

Patented May 2, 1922.

2 SHEETS SHEET 2.

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UNlTED STATE-15S; P I QWEE,

NIEWVTON J. MOCAY, 10F COALINGA, CALIFORNIA.

HEAVY-DUTY BELT ADJUSTER. v

Application filed. February 17,1921. Serial No. 445,804.

T 0 all whom it may concern: i

Be it known that I, NEWTON J. lWloCAY, a citizen of the United States, residing at Coalinga, in the county of Fresiro-and State of California, have invented certain new and useful Improvements in Heavy-Duty Belt- ,Adjusters, of which the following is aspeci- -.ii cation. j g Y This invention relates to belt tools and the primary objectof the invention to pro vide an improved tool for permitting the tightenin without necessitating the removal of the beltsfrom their pulleysor drums. I

It is often necessary, due to stretching or contracting ofbelts, caused by climatic changes, to shorten or lengthen the belts f and considerable time and labor is lnv'olved in doing this'vvhen thebeltsjare large and heavy. This is especially-true in the machinesused-for oil well work and when a .belt is required to be lengthened or shortened, the servicesof three-or fourmen are re r quired to'remove or place the belt on the drive pulley and bandywheel; It is therefore, a'prime objectfof the invention to pro-' vide an improved meansforengaging the belt'while. in position, which will permit the cutting ofthebelt to shorten the same, orpthe insertion of a piece of beltto lengthen the same, the punching of new holes for the lace, and the new lacing ofthebelt.

A further object of the invention is to provide an improved belt tool. embodyinga pair permitt ng the belt cutter or belt puncher to be adjusted transversely and longitudinally of the belt.

' A still further object. ofe the invention is to provide an improved belt tool of the above character, which is durable and ellicient in use, one that is simple andeasy to or loosening of driveor power. transmitting'belts and the lacing thereof manufacture, and one which canbe'placed upon the market at a reasonable cost.

Specification of Iietters Patent. v Patented M 2 192,;

I fiththese and other objects in view,- the. V invent on consists 1n the novelconstruction,

arrangement and formation of parts, as will be hereinafter more specifically described,

claimed and illustrated inthe accompany- ;ing drawings," forming a part of this specification, in which i Figurel is a plan view of the improved belt tool showing thesame in position on a belt;

Figure 2 is abottomi' lan View of th'ejim provedbelt tool showing the same inposition on a belt.

Figure .3 isa vertical longitudinal ,lZIOIHLl VIQ-W through the improved belt tool,=

showing the samein position on a belt, the belt being also shownin section. s f Figure 41san end elevation of the mtion.

verse section through one of the 'clampsof proved ibelt tool, showing the-same :inposi- L W -t1on ona' belt, the belt being shown in See Figure 5 is a fragmentary detailtrans thejmproved belt tool showing' the means A of; adj ustably and hingedly connecting the jawsofthe clamps together. I

F.'gure.;6 is a top,planview.oftheimproved tool showing the same iln'jposition on a belt,

Figure 8 is a fragmentary longitudinal withthe'belt tool cutter associated there is faflvei tical transversejsection through the improvedtool and belt. cutter; 1

section through the improved tool with the belt cutter thereon, an v Figure 915 a view similar to F1gure7 showing a belt pu-ncher associated with the belt tool instead of the belt cutting blade,

Referring to the drawings inldetaihwherein similar reference characters. designate corresponding parts throughout the several .views, the letter A indicates the improved belt tool, B the belt, and C the frame for association with-the tool forsupporting the;

cutter and puncher D .and E respectively. The improved tool A includesa pairof clamps F and G for engaging the belt B at spaced points, a'means Hfor slidably connecting the clamps together, and the neans I for adjusting the clamps toward or away from each other. M

The clamps F and G are constructed, sub

stantially the same, and each-includes an upper and lower jaw 11 and 10. These jaws are arranged in superposed relation and are of a'substanti'ally rectangular configuration and have flat bearing faces for'eng'aging the belt. The bearing faces if so desired, of the jaws and 11 may be provided with friction pads for engaging-the belt or the faces a may be serrated so as to prevent slipping embrace the opposite sides of the jaws 10 and are slotted as at 14 for the receptionof the headed pivot pins 15 carried by the jaws 10. This connection 110 6 01113 permits the jaws to be swungin'relation to each other, but also permits the jaws to be adjusted toward and away from each other. The plate 12 at its transverse center is provided with an inwardly extending notch .16, which is adapted to receive the threaded V adjusting bolt 17 .'\Vl1lCh is pivotally carried by a lower casting or bracket 18 which will also be now 'desc ribed. This casting or bracket 18 includes a base plate 19 which is riveted or otherwise secured to the lower jaw 10 and thi plate is provided with a pair of spaced ears 20 between which the lower end of the adjusting bolt 17 extends. The lowerend' of the bolt is connected to the ears 20 so as to permit thefree swinging movement there- I of in any preferred manner." The upper end of the bolt 17 receives a wing'nut 21, which is adapted to engage the plate 12 and acts as means for adjusting one end of the aws toward the other. The opposite free end of the jaw l0 and 11 are connected together by means of a bolt and adjusting nut,'which will now be described. The mea-ns'fo-r connecting the opposite ends of the jaws l Oand 11 together consists of an upper plate 22 and a lower plate or casting 23. The upper plate '22 and the lower plate 23 are bolted or otherwise secured to the jaws 10' and 11, and the upper plate 22 is provided with an inwardly extending notch for the reception of the upper end of the adjusting bolt 24. The lower plate 23 is provided with a pair of cars 25 for the reception of the lower end of the bolt 24 and the bolt 24 is pivoted or otherwise secured to the ears 25. The bolt 24 also has threaded on its upper end the winged nut 26, by means of which the jaws may be adjusted toward and away from each other. The brackets or castings 18 and 23 are 'rovided with aligned guide sleeves 28 and 2 and these guide sleeves are adapted to slidably receive the guide, rods 29 which form a portion of the ineansH for slidably connecting the'clamps F and G togcther. The rods 29 are provided with 10 of each of the clamps.

heads 30, which serve to limit the outward movement of the clamps in relation to each other beyond a predetermined point and prevent displacement of the clamps from off of said rods. r a 7 Guide rods 31 are also provided for the clamps F and G and are arranged adjacent to the longitudinal center of the. belt-'13 and have their terminals slidably mounted in guide sleeves 32 carried by the opposite sides of brackets or castings 33 and 34 secured respectively to the clamp F andthe clamp G. These brackets or casting 33 and 34 'are bolted or otherwise secured to the lowerja'w The rods 31 are also provided with heads, 35' which also serve as means for preventing movement of the clamps F and G beyond a,

redetermined joint in relation to each other. The bracketsor castings 33 and 34 also form a part of the adjusting means I for moving the clamps F andG towardor away eachother, and'this adjusting means I will now be described. i a V r The adjusting means I'includes theilongitudinally extending rack bar 36, which may i be formed integral with the bracket or casting 34 or secured thereto in any preferred manner. Thisrack bar 36 exte ids'outward ly from the casting'34 toward thecasting 33, which is provided witha centrally disposed guide way 37 for the reception ,of the same. This casting 33 pivotally supports a lever 38whi'ch can be provided with a'suitable operating handle '39. "This lever is mounted upon a suitable pivot pin-4O which 7 extends throughthe casting 33 and the inner end of the lever has pivotally connected thereto a spring pressed pawl 41 which extends into the gnide' way 37 and is ed to engage the teeth of the I rack bar 36. The'casing also carries a pivoted spring pressed pawl 42. which can be manually operated when so'desired This pawl-isalso" adapted to engage the teeth oftlie rack bar and it can be seen that when the lever is moved in one direction, the rack barcan be moved in a step by step movement, thus feeding the clamps toward or away from each other; i

The frame sociated therewith the cutting knife D or punch E is so arrangedas to 'slidably'a-ndre movably fit upon the guide rods 29' and this frame includes a pair of jaws 44 and 45 which are adapted to engage the upper and lower surfaces of the belt B intermediate the clamps F and G. This frame G extends in C which is adapted to have as a parallel relation to'the clamps F and G and i the jaws 44 and 45 thereof are pivotallyconnected to one another atone end by means of V "the hinge 46 which is constructed in thesame manneras the hinged connection of the jaws 10'and 11 of the clamps F and G. T

it can be seen that the jaws 44 and 45 can also be adjusted toward: and away from each other as well as swung in relation to each other; These jaws can-be moved toward and away from each other by the nuts and 'bolts 47 and 48 which are associated with the frame C in the same manner'as the adjusting means of the jaws l0 and 11. The brackets which support the bolts 47 and 48 also carry outwardly extending guides 49 and 50, which are adapted to slidably rest uponthe'guide I rods 29. The upper jaw 45 of the frame C includes a pair of spaced plates 51, the inner surfaces of which are provided with guide grooves 52 forthe reception of the belt out "te'r D or the punch E, which will be hereinafter more fully described.

" The belt cutter D comprlses a frame 58, which supports for vertical movement the 'knifeblade 54 and this blade is adjusted ver- "tically-b'y means of a feed screw 55 which is carried by the frame 53. The opposite lon- 'gitu'dinal edges of the frame 53 is provided 7 with-guide ribs 56- which are slidably fitted within the guide grooves 52. It thus can be seen that the frame can'be slid longitudinally ,tn'the jaw 45 ortransversely of. the belt B.

Thepunch E is constructed'similar to the belt cutter D and also includes a frameGO which is provided with oppositely disposed guideribs for slidably fittingwithin the guide grooves 52. This frame 60-is pro vided with a vertically disposed opening 61 in which is slidably mounted any preferred type of belt punch 63 which may be fed towardor away from the belt bymeans of a feed screw 64.

In operation of the improved tool, when it is desired to cut a piece of the belt therefrom for shortening the length thereof, the clamps F and G are arranged on the belt B in spaced relation to each other and on'opposite sides of the usual laced connection of the ends thereof and the frame C is placed on the guide rod 29 andis slid longitudinally thereof until the knife blade 54 comes into alignment with the desired point. The feed screw 55 is then adjusted so as to move the blade 54 into engagement with the belt B and after the knife blade is adjusted into engagement with the belt B, the frame 53 is moved forcibly transversely across the belt which will effectively sever the same. It can be seen that the clamps F and G will firmly hold the belt ends against separation and the lever 38 is then operated so as to move the clamps F and Gtoward each other and when the belt ends come into engagementwith each other the same are laced in the usual manner.-

Prior to the lacing of the belt ends, suitable holes may be formed in thebelt at the pointwhere the piece has been severed therefrom by means of the puncher E. When the puncher E is to be used the beltcutter D is removed from the frame C. This is accomplished by swinging the bolt 47 on its pivot ous belt tools.

and moving the belt cutter out of the guide s'ociated with the frame 0 it"is merely necesgroove 52. When the puncher E has beenassary to turn the feedgscrew 64 so as; to feed the belt punch 63 into engagement with the.

belt and the hole will be readily made there-v in. It can be seenthat the frame 60 of the versely of the belt so as to make the hole to the desired point transverselyof the belt andthe frame C can itself be adjusted'l0ng1tud1- belt punch. can be readily adjusted trans 1 nally of the belt when .it is desired to make another row of holes. v

' From the foregoing description, it can be seen that an improved and simpledevice has been'provided, for effectively holding the bolt ends in position during repairs to the belt, such as the 'relacing ofthe'endsthereof "or the cutting of a piece out of abelt.

It also can be seen that the improved de- -vice can be effectively used during the insertion of a new pieceinto the belt so asto lengthen the same. When a new piece is to be added to thebelt,the clamp is ,used in' the sameamanner with the. exception that thejaws Fan'd-Grare moved away from each :z'ot-herxsofas' to hold the b'elt atthedesired v-po-int and the new piecefisthen insertedbe-g to the belt ends j be made without or scope of this in- I tween the belt ends. and laced in the ordinary manner. Changes'in details may departing from the spirit vention; but,

I'claim: l V 1. A tool. for facilitating'repairs'to transassociated with the device for holdingvari- 2. A'tool for use in connection with transmission and. drive beltscomprising a pair f of spaced clamps including'adjustable jaws, means for adjusting the clamps toward and away fromeach other, and a frame slidably.

mission and drive belts comprising a pair of clamping members arranged to engage the belt at spaced points, means adjustably connecting the clamps together, a sliding frame arranged between the clamps for movement longitudinally of the belt, a belt 7,

working tool carried by the frame and arranged for movement toward and away from the belt and movement transversely across the belt. r i

4. A belt tool comprising a pair of clamping members, means slidably connecting the clamping members together, means for adjustably connecting the clamping members,

a frame slidably mounted betweenthemembers,a second frame slidably carriedby the first mentioned frame for movement longitudinally of the frame, and a vertically tioned frame.

'5. A belt tool comprlsing a pair of clampmovable tool carried by the second mening members cachincluding a pair of piv- "oted aw's, means for ad ust1ng the aws toward and away from each other, a pair I of guide rods 'slidably'connecting the clamp- 111g members together, means for adjusting the clamping members toward and away from eachother, a movable frame arranged to engage the'guide rods, and a belt work 'ing tool slidably and adjustably carried by said frame.

6; Ina device for facilitating repairs to belts, a pair of clamping members arranged to engage a belt at spaced points, each of the clamping members including a pair of atv's,means connecting the aws for sW1ng' ing' HlOVBmGDlJ, and for permitting a limited vertical movement between'the -jaWs,-'means carried by the jaws for adjustin'gthe same toward and away from each other,l rods 'slidably connecting the clamping members togethei'g'a bracket carried by each one'of the clamping members, a rack bar carried byone of said brackets and slidably engaging the otherbracket, and a pivoted lever carried by the last mentioned bracket, and 7 spring pressedpaivls carriedby the lever i and arranged to engage said raclgbar.

; 7. In a belt tool, a frame including aipair of members arranged to'engage the opposite sides of the belt, .meansgfor adjustingl'the clamping members toward and awayfrom 7 each other, one of *said members including 40 a pair of spaced bai'sdthe bars having guide grooves formed on their 1nnerfaces,a frame arranged between said-bars outvvardly exof the guide rods, a pair of spaced clamps slidably mounted on the I guide rods for; movement toward and away fromeae'hl othereandmeans for holding the clamps in various, locked posit ons on jsald rod,

NEWTON I 

